<?php

/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Config
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Writer.php 25024 2012-07-30 15:08:15Z rob $
 */
/**
 *
 * @category Zend
 * @package Zend_Config
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 */
abstract class Zend_Config_Writer {

    /**
     * Option keys to skip when calling setOptions()
     * @var array
     */
    protected $_skipOptions = array('options');

    /**
     * Config object to write
     * @var Zend_Config
     */
    protected $_config = null;

    /**
     * Create a new adapter
     * $options can only be passed as array or be omitted
     * @param null|array $options
     */
    public function __construct (array $options = null) {
        if (is_array ($options)) {
            $this -> setOptions ($options);
        }
    }

    /**
     * Set options via a Zend_Config instance
     * @param Zend_Config $config
     * @return Zend_Config_Writer
     */
    public function setConfig (Zend_Config $config) {
        $this -> _config = $config;
        return $this;
    }

    /**
     * Set options via an array
     * @param array $options
     * @return Zend_Config_Writer
     */
    public function setOptions (array $options) {
        foreach ($options as $key => $value) {
            if (in_array (strtolower ($key), $this -> _skipOptions)) {
                continue;
            }
            $method = 'set' . ucfirst ($key);
            if (method_exists ($this, $method)) {
                $this -> $method ($value);
            }
        }
        return $this;
    }

    /**
     * Write a Zend_Config object to it's target
     * @return void
     */
    abstract public function write ();

}
